Bushnell 10x42 Powerview Body Roof prism designs have straight barrels with the front objective in-line with the eye piece. This design architecture makes it possible to produce more compact binoculars than porro or inverted porro designs. Optical consequences of the design are that roof prisms are more expensive to manufacture than porro binoculars of the same quality and require phase distortion coatings to eliminate the reduced contrast and sharpness caused by phase distortion – a roof prism phenomenon. Roof prisms also produce a more photographically normal depth perception than porro prisms because the lens barrels are in line with the eyepieces. Glass and Prism Quality Most optical prisms are made from boroscillicate (BK-7) glass or barium crown (BaK-4) glass. BaK-4 is the higher quality glass yielding brighter images and high edge-to-edge sharpness. Coating Rating Coatings help improve light transmission, especially in roof prism designs. This binocular is rated as MULTI-COATED, meaning that at least one surface has more than one coating on it. Eye Relief The 14.7mm eye relief on this binocular is suitable for spectacle wearers and extended periods of viewing. Exit Pupil This binocular has an exit pupil of 4.2mm, for use in shaded or heavy overcast daylight.

10x Magnification • Roof Prism • Multi-coated optics for superior light transmission • Non-slip rubber armour absorbs shock while providing a firm grip • New Contemporary styling